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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="rarexception.setusingexceptions" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>RarException::setUsingExceptions</refname>
<refpurpose>Activate and deactivate error handling with exceptions</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <modifier>static</modifier> <type>void</type><methodname>RarException::setUsingExceptions</methodname>
<methodparam><type>bool</type><parameter>using_exceptions</parameter></methodparam>
</methodsynopsis>
<para>
If and only if the argument is &true;, then, instead of emitting warnings and returning a special value indicating error when the UnRAR library encounters an error, an exception of type <type>RarException</type> will be thrown.
</para>
<para>
Exceptions will also be thrown for the following errors, which occur outside the library (their error code will be -1):
</para>
<itemizedlist>
<listitem>
<simpara>
attempting some operations on a closed <type>RarArchive</type> object or a <type>RarEntry</type> object relative to the first;
</simpara>
</listitem>
<listitem>
<simpara>
attempting to get an entry that does not exist with <methodname>RarArchive::getEntry</methodname>.
</simpara>
</listitem>
</itemizedlist>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>using_exceptions</parameter></term>
<listitem>
<para>
Should be &true; to activate exception throwing, &false; to deactivate (the default).
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.void;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>RarException::setUsingExceptions</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
var_dump(RarException::isUsingExceptions());
$arch = RarArchive::open("does_not_exist.rar");
var_dump($arch);
RarException::setUsingExceptions(true);
var_dump(RarException::isUsingExceptions());
$arch = RarArchive::open("does_not_exist.rar");
var_dump($arch); //not reached
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
bool(false)
Warning: RarArchive::open(): Failed to open does_not_exist.rar: ERAR_EOPEN (file open error) in C:\php_rar\trunk\tests\test.php on line 3
bool(false)
bool(true)
Fatal error: Uncaught exception 'RarException' with message 'unRAR internal error: Failed to open does_not_exist.rar: ERAR_EOPEN (file open error)' in C:\php_rar\trunk\tests\test.php:8
Stack trace:
#0 C:\php_rar\trunk\tests\test.php(8): RarArchive::open('does_not_exist....')
#1 {main}
thrown in C:\php_rar\trunk\tests\test.php on line 8
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><methodname>RarException::isUsingExceptions</methodname></member>
</simplelist>
</para>
</refsect1>
</refentry>
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